Improved machine for upsetting tire



@diluted gratte me and.

Lam Patent No. 98,057, dazed Decemberei, 1869..

The Schedule referred to in these Letters Patent and making part of the same.

To all whom it may concern Be it known that I, ALBERT S. HART, of the city and conntyof San Francisco, State of California, have invented an Improved Band and Tire-Upsett-ing Machine; andi; dohereby declare the following description and' accompanying drawings are sufficient to enable any person skilled in .the art or-science to which it most nearly appeitains, to make and use my said in veution orimprovemeuts, without further invention or experiment.

My invention relates to certain new and useful improvements in machines forshrinking or upsetting the tires of' wheels, but more particularly of' small bands; and

It consists in providing the two jaws, which retain the band or tire, with a projecting head, so that when the' hand is keyed to the machine, the wedge ywill have an equal bearing the entire width of the baud or tire.

The wedges themselves are so arranged inv a slot in the jaws, that as vthey are withdrawn, they are gradually raised, so as to free the band and present no obstacle, to preventthe ready. introduction of the next heated tire..

Attached to the xed jaw is a projection, which :fits

lin a suitable opening in the movable jaw, when they are closed, and which prevents the band from buckling or bending down, during the process of shrinking.

A better understanding of myinvention can be had by referring to lthe accompanying drawings, forming a part of' this specification, in which- Figure 1 is a front view.

Figure 2 is a side view.'

Figure 3 -is a top view.

A is the fixed, and B, the movable jaws cfa-tire for bund-upsetting machine, the two being drawn together by means of a lever, C, the attached end of which is formed into an eccentric, so that by lowering the lever, the jaws are closed.

llieband or tire to he upset is placed upon the curved faces D and E of the two jaws, as shown in red, fig- 1 Directly beneathv thetire, on the fixed jaw, is aprojection, F, which, when the jaws are' closed, fits into a corresponding recess, F', inthe movable jaw, so as to form a connection between the two jaws, which prevents the band from buckling or bending downward,

when the pressure is on it;

with a flange, a, fitting-in a wedges are lifted clear of the faces, when drawnback,

4 andjseal.

Above the bed, upon which the band or tire is placed, are two projecting heads, GG, one attached to to give a bearing for the wedges the entire -width of the tire, so that the strain will be equally distributed, thus obviating the necessity of having bearings on both sides, for the wedges to pass through.

The heads.- are placed far enough apart to admit the stroke of a hammer, which will be necessary,

should the band buckle or bend upward under the,

strain.

flhe wedges H are provided with a ilange,a,at their upper side, standing at right langles to the wedge itself', and which moves in a corresponding slot in the upper portion of the slot in which the wedge moves, thus causing the flange to gradually raisethe wedge when it is withdrawn, and depress it, as it is driven in. This is necessary, in order that no obstacle shall be inv the wayr of' immediately placing the baud or tire, after it heated, upon the bed, to which it is confined for shrinking, as hands especially become cooled very quickly, after being removed from the fire, owing to the thinness ofthe metal of \\'l1ich.they are made.

Having thus described my invention,

What I claim as new, and desire to secure by Let- 1. The arrangement, relative-ly to each other, of the l f several parts of the above-described machine, substantially as seti'orth.

2. In combination with the faces D and E, andthe projecting heads G, the wedges H, when provided groove, whereby the so as to leave a clear space to receive the tire, substantially as described.

In witness whereof', I have hereunto set my hand ALBERT S. HART. [L. 8.] 

